scholarly journals Influence of Cultural and Pest Management Practices on Performance of Runner, Spanish, and Virginia Market Types in North Carolina

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Bridget R. Lassiter ◽  
David L. Jordan ◽  
Gail G. Wilkerson ◽  
Barbara B. Shew ◽  
Rick L. Brandenburg

Virginia market type peanut (Arachis hypogaeaL.) cultivars are grown primarily in North Carolina, South Carolina, and Virginia in the US, although growers in these states often plant other market types if marketing opportunities are available. Information on yield potential and management strategies comparing these market types is limited in North Carolina. In separate experiments, research was conducted to determine response of runner, Spanish, and Virginia market types to calcium sulfate and inoculation withBradyrhizobiumat planting, planting and digging dates, planting patterns, and seeding rates. In other experiments, control of thrips (Frankliniellaspp.) using aldicarb, southern corn rootworm (Diabrotica undecimpunctataHowardi) using chlorpyrifos, eclipta (Eclipta prostrataL.) using threshold-based postemergence herbicides, and leaf spot disease (caused by the fungiCercospora arachidicolaandCercosporidium personatum) fungicide programs was compared in these market types. Results showed that management practice and market types interacted for peanut pod yield in only the planting date experiment. Yield of runner and Virginia market types was similar and exceeded yield of the Spanish market type in most experiments.

1997 ◽  
Vol 24 (2) ◽  
pp. 128-134 ◽  
Author(s):  
D. A. Herbert ◽  
W. J. Petka ◽  
R. L. Brandenburg

Abstract The southern corn rootworm, Diabrotica undecimpunctata howardi Barber, is a primary pest of peanut, Arachis hypogaea L., in Virginia and North Carolina and an occasional pest in South Carolina, Georgia, Alabama, and Texas. Currently, no alternatives involving integrated pest management exist for this pest, and control is based solely on preventive application of soil insecticides. Recent reductions in federal price support for peanut grown in the U.S. have provided incentives for growers to look for ways to reduce production costs. A risk index was developed that integrates factors that influence rootworm abundance and peanut pod damage to estimate levels of risk in individual peanut fields, and thus allows for more prescriptive and economical rootworm management. This index was evaluated using 44 field case studies in Virginia and North Carolina commercial peanut fields over the period 1989 to 1996. In each field case, predicted risk was compared to actual percent pod damage. Results showed that in 29 of 44 cases, the index accurately predicted general levels of risk to pod damage, and insecticide treatment decisions based on the index would have been correct in 32 of 44 cases. This report contains the individual index components, the justification for each, the indexing process, example index scenarios, and results of the process used in field case study evaluation.


Author(s):  
Abu Hanifa Md. Noman ◽  
Md. Amzad Hossain ◽  
Sajeda Pervin

Objective - The study aims to investigate credit risk management practices and credit risk management strategies of the local private commercial banks in Bangladesh. Methodology -The investigation is conducted based on primary data collected from a set of both closed end and open end questionnaire from 23 out of 39 local private commercial banks in Bangladesh. Descriptive statistics has been used in processing the data and interpreting the results. Findings - The results reveal that credit risk management practice of the sample banks is sound which is attributed to the appropriate implementation of Basel II and credit risk management guidelines the country's central bank. The findings further show that use of Credit risk grading is most popular and effective criteria for measuring the borrowing capacity of the borrowers. In order to control credit risk and preventing losses from credit exposure banks give more focus on collateralization, accurate loan pricing and third party guarantee. Loan is monitored properly and credit reminder is given to the client if principal and interest remain outstanding for three months. The study further reveals that lack of experienced and trained credit officers, lack of genuine market information and Lack of awareness regarding non-genuine borrower are the most important problems of current credit risk management practices in Bangladesh. Novelty - To the best of the knowledge of the authors the study is the first that investigates credit risk management strategies of private commercial banks, especially on Bangladesh. Type of Paper - Empirical Keyword : Bangladesh; Commercial Bank; Credit risk; Credit risk management; Credit risk management strategies.


2018 ◽  
pp. 1749-1768
Author(s):  
Renu Agarwal ◽  
Christopher Bajada ◽  
Paul J. Brown ◽  
Roy Green

This chapter explores the management strategies adopted by manufacturing firms operating in high versus low cost economies and investigates the reasons for differences in the management practice choices. The study reported in this chapter identifies a subset of countries that have either high or low labour costs, with USA, Sweden, and Japan being high, and India, China, and Brazil being low labour cost economies. The high labour cost manufacturing firms are found to have better management practices. In this chapter, the authors find that Australia and New Zealand manufacturing firms face relatively high labour cost but lag behind world best practice in management performance. The chapter concludes by highlighting the need for improvement in management capability for Australian and New Zealand manufacturing firms if they are to experience a reinvigoration of productivity, competitiveness, and long-term growth.


2020 ◽  
Vol 113 (5) ◽  
pp. 2223-2234
Author(s):  
Seth J Dorman ◽  
Dominic D Reisig ◽  
Sean Malone ◽  
Sally V Taylor

Abstract Economically damaging infestations of Lygus lineolaris (Palisot de Beauvois), tarnished plant bug, were sporadic in Virginia and North Carolina cotton before 2010. Given the sudden rise of L. lineolaris as an economic pest in these states, regionally specific management practices (i.e., chemical and cultural control) are needed to help producers protect yield potential while minimizing input costs. Field experiments were conducted in Virginia and North Carolina in 2018 and 2019 to 1) determine the effects of various management practices on L. lineolaris density, plant injury (i.e., square retention, internal boll injury), and lint yield, 2) calculate the economic trade-offs between integrated pest management (IPM) systems approach and current management practices for L. lineolaris in these states, and 3) evaluate economic benefits associated with various sampling thresholds. Lygus lineolaris populations peaked mid-season (i.e., August) during cotton flowering in both states. Weekly scouting and applying foliar insecticides when the current University Extension recommended economic threshold was reached was the most critical management treatment in maximizing economic returns. Additional costs among various IPM practices did not translate into significant yield protection and economic gains. Moreover, there were additional economic benefits associated with protecting glabrous and longer maturing varieties in Virginia. Lygus lineolaris density varied significantly between states; therefore, management recommendations should be modified based on the growing region. Results from this study will be used to create an IPM strategy to help cotton producers effectively manage this insect pest in the Southeast.


HortScience ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 598D-598
Author(s):  
J.M. Kemble ◽  
E. Bauske ◽  
E. Sikora ◽  
G. Zehnder

IPM teams from Alabama, North Florida, Georgia, Kentucky, North Carolina, South Carolina, and Tennessee composed of growers, private consultants, and faculty defined IPM on fresh-market tomatoes and created a survey from this definition to evaluate the level of IPM used by growers in the southeastern U.S. The survey included three sections: cultural practices, pesticide application techniques, and specific pest management practices, and was distributed to tomato growers in the region by mail, at county meetings, and through other relevant venues. Additionally, growers were asked to identify problems (insect, disease, and nonpest, i.e., cultural) and beneficial technology or research developments. Results of the survey revealed that in North Florida, Georgia, Kentucky, North Carolina, and South Carolina more than 75% of the tomato acreage is in the medium or high IPM category. These states have met or exceeded the State IPM teams' criteria for practicing IPM and have met the Federal mandate of IPM implementation on 75% of the fresh-market tomato cropland. Tomato producers listed early blight, late blight and bacterial spot as their main disease problems; tomato fruit worm, thrips, and aphids as their primary insect problems; and poor weather conditions, government regulation, and labor issues as their primary nonpest problems. Producers throughout the region felt that the development of resistant varieties would help them increase production the most. The State IPM teams outlined a clear definition of IPM in fresh-market tomato production and the survey results established a baseline that can be used to measure the success of programs to increase IPM adoption. The results will aid in focusing the Extension/research agenda in the universities in the Southeast.


Plant Disease ◽  
2020 ◽  
Author(s):  
Ruoxi Xia ◽  
Arthur W. Schaafsma ◽  
Felicia Wu ◽  
David C. Hooker

Fusarium head blight (FHB) in wheat causes yield loss, quality reduction, and mycotoxin contamination in temperate wheat production areas worldwide. The objective of this study was to quantify the progress of agronomic and FHB management strategies during the past two decades on FHB suppression and agronomic performance of winter wheat in environments favorable for FHB. Field experiments were conducted in environments typical in FHB epidemics for comparing common agronomic and FHB management practices used in the 1996 era compared to those used in 2016. The experiments included a comparison of 3 different nitrogen fertilizer (N) application rates, 6 old (1996-era) and new (modern-era) winter wheat cultivars representing combinations of susceptibility-eras to FHB, with and without a fungicide applied at flowering (pydiflumetofen + propiconazole). To mimic environments favorable for infection (similar to 1996 in Ontario, Canada), plots were challenged at 50% anthesis with a F. graminearum macroconidia suspension followed by mist irrigation. The modern management strategy of using moderately resistant cultivars, a fungicide applied at flowering, and a high rate of N fertilizer reduced total deoxynivalenol by 67%, reduced Fusarium damaged kernels (FDK) by 49%, reduced FHB Index by 86%, increased grain test weight by 11% and increased grain yield by 31% compared to the standard management practice of seeding highly susceptible (HS) cultivars with no fungicide and a lower rate of fertilizer N recommended in the 1996 era. This study enabled a published economic assessment of the return on investment for the improvements in cultivars, fungicide and N applications since 1996.


2004 ◽  
Vol 55 (3) ◽  
pp. 279 ◽  
Author(s):  
J. Dorrough ◽  
A. Yen ◽  
V. Turner ◽  
S. G. Clark ◽  
J. Crosthwaite ◽  
...  

There is an increasing interest in the development of livestock grazing management strategies that achieve environmental sustainability and maintain or improve the long-term production capacity of commercial grazing systems. In temperate Australia, these strategies are generally focussed on reducing perennial pasture decline, soil loss, acidity, and salinity. An additional challenge facing land managers and researchers is developing grazing strategies that also maintain and enhance local and regional biodiversity. However, few studies have assessed the compatibility of management practices for maintaining long-term productivity and biodiversity conservation. We still have only a very basic understanding of the effects of different grazing strategies and pasture management on biodiversity and this is a major impediment to the development of appropriate and compatible best management practice. We argue that although there is an increasing desire to find management strategies that protect and enhance biodiversity without hindering long-term agricultural production, in many cases this may not be possible. Current knowledge suggests that compatibility is most likely to be achieved using low-input systems in low productivity (fragile) landscapes, whereas in highly productive (robust) landscapes there is less opportunity for integration of productive land-use and biodiversity conservation. There is an urgent need for improved communication and collaboration between agronomic and ecological researchers and research agencies to ensure that future programs consider sustainability in terms of biodiversity as well as pasture and livestock productivity and soil and water health.


2020 ◽  
Vol 1 (2) ◽  
pp. 82-85
Author(s):  
Shirisa Acharya ◽  
Subham Kaphle ◽  
Jaya Upadhayay ◽  
Abina Pokhrel ◽  
Sabina Paudel

Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a polyphagous pest which is arising as one of the major threats to agricultural crop production. It has around 80 host species that cause severe damage to cereals and vegetable crops. This pest was first discovered in Africa (2016) and first collected and reported in Nepal at Nawalparasi district on 9th may 2019. The larvae of FAW are found on young leaves, leaf whorls, tassels or cobs according to their growth stages. First instar larvae scrape leaves and shows pin-hole symptoms and window-pane feeding symptoms whereas in the later vegetative stages, damage results in skeletonised leaves and heavily windowed whorls. If climatic condition for pest establishment is suitable this pest could cause approximately 100% crop loss in maize if not managed in time. Regular scouting, push and pull method, black light traps, commonly available botanicals like neem locally available materials like ash and some recommended insecticides with recommended dose can be used for the control of fall armyworm. There is an urgent need for developing ecologically sustainable, economically profitable, and socially acceptable integrated pest management strategies to mitigate the impacts of the fall armyworm and not just rely on single management practice.


Author(s):  
Renu Agarwal ◽  
Christopher Bajada ◽  
Paul J. Brown ◽  
Roy Green

This chapter explores the management strategies adopted by manufacturing firms operating in high versus low cost economies and investigates the reasons for differences in the management practice choices. The study reported in this chapter identifies a subset of countries that have either high or low labour costs, with USA, Sweden, and Japan being high, and India, China, and Brazil being low labour cost economies. The high labour cost manufacturing firms are found to have better management practices. In this chapter, the authors find that Australia and New Zealand manufacturing firms face relatively high labour cost but lag behind world best practice in management performance. The chapter concludes by highlighting the need for improvement in management capability for Australian and New Zealand manufacturing firms if they are to experience a reinvigoration of productivity, competitiveness, and long-term growth.


2021 ◽  
Vol 26 (2) ◽  
Author(s):  
Pertti Karhapää ◽  
Woubshet Behutiye ◽  
Pilar Rodríguez ◽  
Markku Oivo ◽  
Dolors Costal ◽  
...  

AbstractAgile methods can deliver software that fulfills customer needs rapidly and continuously. Quality requirements (QRs) are important in this regard; however, detailed studies on how companies applying agile methods to manage QRs are limited, as are studies on the rationale for choosing specific QR management practices and related challenges. The aim of this study was to address why practitioners manage QRs as they do and what challenges they face. We also analyzed how existing practices mitigate some of the found challenges. Lastly, we connect the contextual elements of the companies with their practices and challenges. We conducted 36 interviews with practitioners from four companies of varying sizes. Since each company operates in different domains, comparing QR management strategies and related challenges in different contexts was possible. We found that the companies apply proactive, reactive, and interactive strategies to manage QRs. Additionally, our study revealed 40 challenges in six categories that companies applying agile methods may face in QR management. We also identified nine contextual elements that affect QR management practice choices and which, importantly, can explain many related challenges. Based on these findings, we constructed a theoretical model about the connection between context, QR management practices, and challenges. Practitioners in similar contexts can learn from the practices identified in this study. Our preliminary theoretical model can help other practitioners identify what challenges they can expect to face in QR management in different developmental contexts as well as which practices to apply to mitigate these challenges.


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